Issue 22, 2001

Self-assembly of tetrametallic square [Re4(CO)12Br4(μ-pz)4] (pz = pyrazine) from [Re(CO)4Br(pz)]. A mechanistic approach

Abstract

Self-assembly of the tetranuclear square [Re4(CO)12Br4(μ-pz)4] (pz = pyrazine) from the monometallic complex [Re(CO)4Br(pz)] in acetone at room temperature has been investigated. The mechanistic pathway is examined and proved by both in-situ1H NMR and ES-MS studies. Both techniques are helpful to identify three species, Re2(CO)8Br2(μ-pz), Re(CO)3Br(pz)2 and Re2(CO)7Br2(μ-pz)(pz), as intermediates. The other intermediates, Re3(CO)11Br3(μ-pz)2, Re3(CO)10Br3(μ-pz)2(pz), Re4(CO)14Br4(μ-pz)3 and Re4(CO)13Br4(μ-pz)3(pz), detected by electrospray mass spectral techniques also support the proposed mechanistic pathway.

Graphical abstract: Self-assembly of tetrametallic square [Re4(CO)12Br4(μ-pz)4] (pz = pyrazine) from [Re(CO)4Br(pz)]. A mechanistic approach

Supplementary files

Article information

Article type
Paper
Submitted
02 Mar 2001
Accepted
13 Sep 2001
First published
19 Oct 2001

J. Chem. Soc., Dalton Trans., 2001, 3346-3351

Self-assembly of tetrametallic square [Re4(CO)12Br4(μ-pz)4] (pz = pyrazine) from [Re(CO)4Br(pz)]. A mechanistic approach

T. Rajendran, Bala. Manimaran, F. Lee, P. Chen, S. Lin, G. Lee, S. Peng, Y. Chen and K. Lu, J. Chem. Soc., Dalton Trans., 2001, 3346 DOI: 10.1039/B101992I

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